<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>作用域-面试题2</title>
</head>
<body>
    
<script type="text/javascript">
    var fn = function (){
        console.log(fn)
    }
    fn()

    var obj = {
        fn2:function(){
            console.log(fn2) // 报错 ，需要使用this.fn2或obj.fn2
        }
    }
    obj.fn2()
</script>
</body>
</html>